Cave of Three Bridges in Tannourine, Lebanon

Sea cave on Akun Island, Alaska

Dripstone Cave in Austria

Lumagiang Cave, Mountain Province, Philippines

Ice cave under a volcano in Kamchatka

If Batman went on vacations, he would probably choose one of these caves. They are so giant that even people suffering from claustrophobia would feel good inside. Have you visited any of these caves, or have another one to show us? Let us know in the comments!